Apparatus for use in the distribution of electric currents.



BEBE-REY. V APPARATUS FOR USE 1N THB DISTRIBUTION-0F ELEGTMG GURRBNTS.

APPLICATION IIILED MAY 6, 19.11.

Patented Dec. 5, 1911.

FREIIERGK E. BERRY, OF ENGLAN? ASL COMPAHY, it CORPOREION @E APPARATUSFR XN THE ISTRLIBUIEGN ELEC LAO. Specification of Letters intent.

s* iii,

Application flied May G, i511. Serial No.

To cl 'wil/om 'il izfioy con/cem:

Be known that Finionmon BERRY, 'E hc King; off' Great, Brit in, refyos,county of liiitltllescx, lnginvented certain. new intl usefullmni'ovcments in Apparatus for in the listrihnion oit lllectricCurrents, ot which the f/llowing .is s speciiicetion.

.sly invention. relates to improvements in nl reins for use in the distlnition of el@ tric currents, comprising systems YWherein electricenergy is supplied alternately to one or another of two groups, orseries ot' cleviccs, ci it lies for its object to provide 'uns 'herebytho inflividiml devices of group are automatically broughtinto in succen, i y iiivcntion has been, particularly dei for nee .in thedistiibntion of alternatents with the aid of main :ind snptransformers,es set forth, for esmpie, the specification of British. Letters FotcntNo. 2096 of 1904.

occoriiance with my invention, I employ n plurality of main transformersand a corresponding Inumber of supplementary transformers, there being asupplementary transformer :for each main transformer, the priinsry andsecondary windings of each set of main and supplementary transformersheing normally connected in series and across primary supply andsecondary distributing innins in the well known manner.

'The object of n1y"inventi )n is the construction of o (leviop'. whichmay be used where it is desired to operate zz series ot' switchessuccessively, and more particularly one which shall. permit :i number ofsuch sets of transformers to be operntecl in parel lol and, hy ineens ofs suitable relay, which may ,p rated automatically or by hantl, when theioctl on the trnnsftorn'icrs exceeds s 'predetermined amount, to short,-circuit the primary :incl secondary windings of the supplementarytransformers and to open the short circuits when the load on thetransipiormcrs tells he'low a pretleterininetl amount.

i accomplish the object of my invention by employing for each set oftransformers fi seozirsic switch mechanism which has in opmotiverelation with it. elcctionmgnctic de- Vices having enerpizing Winrlingsfor closinn; und opening nie switches, and, on arrsngement ot'connections, whereby, when the first switch of the series has either ofits switches will he cio windings. energize@ similar v viflir gs for besucces l y cnil@ seal or openetl. oveities o: my invention are pointedont Witn more peii'ticulerity in the The furthe claims append-cilspeciootion.,

For n furtlier nntlerstentling of my invention, referencenifzy he. hacito the accompanying chewing -which shows ilizigiamintically the circuitsemploy, i

Referring new to the drawing, have to and mode ai part of this shown myinvention es applied to foin sets oi transformers, comprising main twinsioimers T1, T2, T3, il, with primo-ry secondary 'windings respectivelyconnectefl in series to the similar windings ot' anxil iury transformerst, t2, 253, 4.

l enel 2 i `e the high tension supply meins across which the primarywindings ofthese of transformers are normally' connected in series, and3 intl 45- sre the secondary clistributing mains across which thesecondary windings of these sets of transformers are normally connectedin series. l,When the load upon the transformers exceeds :Lpredetermined amount, ythe .secondary anti primary windings of theauxiliary transformers are shorty circnitezl by means of switchmechanisms 5, having switches (i anti l for simultaneously shortcircuiting respectively the prinisry and secontlcry windings of theauxiliary transformers in the Well known manner.'l ln operative relationwith these switches are electromagnetic mechanisms 8.1 82, 83, 8HXhaving closingl and opening Windings 9, 10, these winclings being;eirzinged so that, when the closing windings 9 sie encrgizecl, they willpull up and close switches G :intl Y, and, when thcopcning Wintlings l0nre energizetl, Yhey will open the seme switches, A il is arrongetl withits energizing Wim g' encig'inecl hy e current proportional to tnocurrent flowing in the primary mains and having in operative relationwith it o core. 12 connected to a contact lever i3 arranged to Workbetween lifted contacts 'll-1 l5. Contact. lever i3 is connecterl todistributing conductor 3. @ne enfl'oif thc closing; winding 9- oiE thetiret sr tch mechanism 81 is connectefl to contact l# and the other enelto Contact' in operative relation with contact lever l). which is opzin;connections which l` iio 45 may be in the position shown or makeconerated by the action of the electromagnetic mechanism 81, as will beseen from an inspection of the drawing. This lever is connected toconductor 4 and in operative relation therewith are contacts 16connected to one end of the closing winding 9 of this mechanism and 17which is connected, as shown, to the opening winding 10 of the secondmechanism 82, and contact 18 connected to one end of the closing windingof mechanism 82 and of the opening winding of mechanism 81.

Referring now to the second mechanism 82, which operates to shortcircuit the auxillary transformer t2 of the second set of transformersT2, t2, it will be observed that the switching mechanism and theconnections of the closing and opening windings therefor are in generalsimilar to those of mechanism 82, contact lever 19 however beingconnected to conductor 3 and in its normal position as shown by the fulllines making contact with one end of its closing winding and one end ofthe opening winding of the succeeding mechanism 83 by means of contacts16 and 17 and in its closed position as shown by the dotted lines makingcontact with contact 18 connected to one end of its'opening winding andcontact 20 connected to one end of the closing winding 9 of thesucceeding switch mechanism 82. The remaining switch mechanisms 82, 8Lmay be connected as shown, contact levers 19 being alternately connectedto conductors 3 and 4 as shown, andvit will be obvious that while I havedescribed my invention as applied to four transformers, 1t may equallywell be applied to a greater number of transformers, the connectionsbeing made in a manner similar to those which I have described. i

The principle upon which my invention operates is as follows: Normallythe windings of the supplementary transformers are open circuited asshown and the relay 11 tact with contact 15. Vhen the load upon thetransformers exceeds a predetermined amount thecore 12 of relay 11 willbe pulled up, thus causing a contact between lever 13 and contact 14.When this contact takes place, closing winding 9 of the irst mecha nism81 will be energized, as current will flow from conductor 3 to lever13contact 14, winding 9, contact 16, lever 19, to conductor 4. This willcause this mechanism to close switches 6 and 7, short. circuiting theprimary and secondary windings of auxiliary transformer t1 and throwlever 19 in the position shown by the dotted lines, where it makescontact with contact 18. When this contact is completed, winding 9 ofthe second switch mechanism 82 will be energized, current flowing fromconductor 4 through lever 19 of mechanism-81, contact 18, closingwinding 9 of mechanism 82, contact 16, lever 19 of mechanism 82 andconductor 3. The energizing of this winding will cause mechanism 82 tooperate, short circuit the primary and secondary windings of theauxiliary transformer t2 and move its lever. 19 in the position shown bythe dotted linesv so as to make contact with contacts 18 and 20, whenthe succeeding mechanism 83 will have its closing winding energized in amanner similar to that described, causing it to operate and close itsswitches 6, 7 and in turn 0 erate mechanism 8". It will thus be seentiat by the operation of relay 11, the-closing winding of the firstswitch is energized, which causes the closing windings of the otherswitches to be successively energized, each switch by its movementenergizing the closing winding of the succeedwindings 10 of saidswitches. If now the load on the transformers falls below a,predetermined amount, core 12 of relay 11 will drop, causing lever 13to make contact with contact 15. This will energize the opening winding10 of mechanism 82, current flowing from conductor 3 through lever 13,contact 15, winding 10, contact 18, lever 19, to conductor 4. Itsswitches 6 and 7 will then open and its contact lever 19 make contactwith contact 17, when opening winding 10 of mechanism 82 will beenergized, current flowing from conductor 4, through lever 19 ofmechanism 82, contact 17, winding 10, contact 18 and lever 19 ofmechanism 82 to conductor 3. This will cause this mechanism 82 tooperate and open and by its movement its contact lever 19 will assumethe posit-ion shown by the full lines, thus energizing the openingwinding 10 of mechanism 82, causingit to operate and in turn operatemechanism 82. It will thus be seen.that when the current falls below apredetermined amount, relay- 11 will operate to energize the openingwinding of thefirst mechanism 81, so that when this winding opening thefirst switch is energized, the opening windings of the other switchesare successively energized and the connections will be as shown, theauxiliary transformers being in operative relation with the windingsinseries with those of the main transformer across the supply anddistributing' conductors, and with contact levers 19 of the variousswitch mechanisms, in s uch a posit-ion that the operation of relay 11upon an overload will renergize the successively operatevthe same.

the art and not depart from the spirit of my y invention.

What I claim as new and desire to secure by Letters Patent of the UnitedStates, is;-

1. A switch mechanism for operating a luralit Y of devices in successioncom rising a plurality of switches, electromagnetic mechanism inoperative relation with each switch havingclosing and opening windingsadapted when energized to close land. open the same, supply mains,connections between said mains and the windings closing said switchesarranged so that when the closing winding of the rst switch is energizedthe closing windings of the other switches are successively energized,and means in operative relation with the switches arranged so that whenthe winding opening the first switch is energized the opening windingsof the other switches are successively energized. i

2. A switch mechanism for operating plurality of devices in succession,comprising a plurality of switches, electromagnetic mechanism inoperative relationwith each switch having closing andopening windingsmary and secondary windings of each set adapted when energized to closeand open the same, supply mains, connections between saidk mains and thewindings closing said switches arranged so that when the closing windingof the first switch is energized the closing windings of the otherswitches are successively energized, means in operative relation withthe switches arranged so that when the winding opening the first switchis energized the opening windings of the other switches are successivelyenergized, and a relay adapted to energize alternately the closing andopening winding of the rst switch.

3. In combination, supply and distribut- Aing conductors, a plurality ofsets of main and supplementary transformers, the pri- Copies o( thispatent may be obtained for ve cents each, by addressing the"Commissioner of Patentsll normally connected in seriesand across theprimary and distributing mains respectively, a` plurality of switchesadapted to simultaneously and successively short circuit the 'primaryand secondary windings of each of the supplement-ary transformers,.

electromagnetic mechanism in operative relation with each switch havingclosing and opening windings adapted when energized to close and openthe same, connections between the conductors and the closing windingsarranged so that when the closing winding of the rst switch is energizedthe closing windings of thevother switches are successively energized,and means in operative relation with the mechanisms arranged so thatwhen the opening winding of the first switch is energized the openingwindings of the other switches are successively energized.. y

4. In combination, -supply and distribut- `mary and Asecondarywindings'of each set.

normally connected in-series and across the primary and distributingmains respectively, a plurality of switches yadapted to simultaneouslyand successively short circuit the primary and secondary windings ofeach of the supplementary transformers, electromagnetic mechanism inoperative relation with each switch having closing and opening windingsadapted when energized to'close and open the same, connections betweenthe conductors and the closing Windings Aarranged so that when theclosing winding'of the first switch is energized the closing windingsofthe other switches 'are successively energized, means in operativerelation' with .the mechanisms arranged so that when the opening windingof the first switch is energlzed the opening windings of the otherlswitches are successively energized, and a relay adaptedrto energize theclosing winding of the .first switch when .the loaden the transformersexceeds a predetermined amount and to energize the opening Vwinding-ofthe first switch when the load on the transformers falls below apredetermined amount. A In witness whereof, I have hereunto set my handthis twentyu-fourth day of April, 1911.

FREDERICK E. BERRY. Witnesses:

Jos. GOODMAN, MAURICE A. .V. LONDON.

Washington. D. C.

